Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; reef-associated; depth range 1 - 300 m (Ref. 127470). Tropical
Indo-West Pacific: Red Sea, Reunion, Madagascar, and South Africa; north to Japan, Taiwan, China, New Caledonia (including Chesterfield Islands), south to Australia;
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 17.0 cm TL male/unsexed; (Ref. 3131); common length : 12.0 cm SL male/unsexed; (Ref. 5978)
Dorsal spines (total): 5 - 7; Dorsal soft rays (total): 10 - 12; Anal soft rays: 9 - 11; Vertebrae: 25 - 26. The species is distinguished from its congeners by the following characters: lateral-line scales 13 - 17; scale rows below lateral line 11-14, modally 11-12; three scale rows below lateral line 8; total gill rakers 16-20; small scales between fourth scale row below lateral line and abdominal scutes, its posterior tip not reaching second postpelvic scute; no teeth on vomer; mouth large, reaching vertical through posterior margin of eye (Ref. 127470).
Cross section: oval.
Found in the sublittoral zone (Ref. 11230), under ledges and caves of rocky reefs (Ref. 9710). Forms schools (Ref. 6620). Adults are found between 20 and 200 m depth, juveniles occasionally in shallower water (Ref. 9650). Regularly displayed in public aquaria.
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Su, Y., H.-C. Lin and H.-C. Ho, 2022. A new cryptic species of the pineapple fish genus Monocentris (Family Monocentridae) from the western Pacific Ocean, with redescription of M. japonica (Houttuyn, 1782). Zootaxa 5189(1):180-203. (Ref. 127470)
IUCN Red List Status (Ref. 130435: Version 2025-2)
Threat to humans
Harmless
Human uses
Fisheries: of no interest; aquarium: commercial
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